3Com S7906E - Switch, Configuration Manual

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Configuring BFD for RIP (Single-Hop Detection in BFD Echo Packet Mode)
Network requirements
As shown in the following figure:
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Switch A and Switch C are interconnected through a Layer 2 switch. VLAN-interface 100 of the two
switches runs RIP process 1, BFD is enabled on VLAN-interface 100 of Switch A.
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Switch A is connected to Switch C through Switch B. VLAN-interface 200 on Switch A runs RIP
process 2; VLAN-interface 300 on Switch C, and VLAN-interface 200 and VLAN-interface 300 on
Switch B run RIP process 1.
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Configure a static route and enable static route redistribution into RIP on Switch C. Switch A learns
the static route sent by Switch C, the outbound interface of the route is the interface connected to
the Layer 2 switch.
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When the link between Switch C and the Layer 2 switch fails, BFD can quickly detect the link failure
and notify it to RIP, and the BFD session goes down. In response, RIP deletes the neighbor
relationship with Switch C and the route information received from Switch C. Then, Switch A learns
the static route sent by Switch C with the outbound interface being the interface connected to
Switch B.
Figure 1-8 Network diagram for configuring BFD for RIP (single-hop detection in BFD echo packet
mode)
Configuration procedure
1) Configure an IP address for each interface (Omitted)
2) Configure RIP basic functions.
# Configure Switch A.
[SwitchA] rip 1
[SwitchA-rip-1] network 192.168.1.0
[SwitchA-rip-1] quit
[SwitchA] interface vlan-interface 100
[SwitchA-Vlan-interface100] rip bfd enable
[SwitchA-Vlan-interface100] quit
[SwitchA] rip 2
[SwitchA-rip-2] network 192.168.2.0
# Configure Switch B.